7000000000009 has 2 divisors, whose sum is σ = 7000000000010. Its totient is φ = 7000000000008.

The previous prime is 6999999999973. The next prime is 7000000000013. The reversal of 7000000000009 is 9000000000007.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4670093881600 + 2329906118409 = 2161040^2 + 1526403^2 .

It is a cyclic number.

It is not a de Polignac number, because 7000000000009 - 2⁹ = 6999999999497 is a prime.

7000000000009 is a modest number, since divided by 9 gives 7 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 6999999999911 and 7000000000001.

It is not a weakly prime, because it can be changed into another prime (7000000000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500000000004 + 3500000000005.

It is an arithmetic number, because the mean of its divisors is an integer number (3500000000005).

Almost surely, 2^{7000000000009} is an apocalyptic number.

It is an amenable number.

7000000000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7000000000009 is an equidigital number, since it uses as much as digits as its factorization.

7000000000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 16.

The spelling of 7000000000009 in words is "seven trillion, nine", and thus it is an aban number and an uban number.